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English definition of “oxidize”

oxidize

verb [I or T] (UK usually oxidise)     /ˈɒk.sɪ.daɪz/ US  /ˈɑːk-/
If a substance oxidizes, it combines with oxygen and loses hydrogen to form another substance , and if something oxidizes a substance , it causes it to do this: Iron oxidizes to form rust . When you heat fat , it oxidizes easily .Physical and chemical processes If a chemical element oxidizes, it loses electrons (= very small pieces of matter with negative electrical charge ) and if you oxidize it, you cause it to do this.Physical and chemical processes oxidization (UK usually oxidisation)     /ˌɒk.sɪ.daɪˈzeɪ.ʃən/ US  /ˌɑːk-/ noun [U] (US usually oxidation)
(Definition of oxidize verb from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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